China moved to the west, which is located in the northeast of Tangshan City, Hebei Province, at the southern foot of Yanshan Mountain, at the foot of the Great Wall, and on the bank of the Luan River, with a total area of 1439 square kilometers and a population of 407000. This is an ancient land—— The ancestor of rocks with a rock age of 3.67 billion years is filled with mysterious sighs of the beginning of chaos;The world's oldest relics of oceanic crust show the vicissitudes of 2.6 billion years;Xizhai Cultural Site, which has been silent for 7000 years, reflects the brilliant civilization of Luanhe River This is the land of a hero—— Moving to the north of the west, the 87km Great Wall connects more than 20 majestic passes, including Longjing Pass, Panjiakou, Xifengkou, Dongjiakou, Qingshanguan, and so on. It has been a place of war since ancient times.Li Guang, Cao Cao, Qi Jiguang... Heroes from generation to generation have composed many impassioned and sad songs here! In 1933, the Great Wall Anti Japanese War broke out. Song Zheyuan's 29th Army officers and men wielded broadswords and fought with the Japanese invaders in Xifengkou, Tiemenguan and Dongjiakou. More than 5000 enemies were killed successively. The "Broadsword March" was sung nationwide.